Kempf Construction LLC is a licensed general contractor Junction City OR homeowners, business owners, and property investors can trust, backed by more than 20 years of building experience across Lane County and the Willamette Valley. From custom homes on farmland acreage off Prairie Road to kitchen remodels near historic downtown Junction City, additions and ADUs throughout the area, and commercial build-outs along the Highway 99 corridor, we manage residential and commercial construction from the first sketch to the final walkthrough. Our team is CCB-licensed, bonded, and insured under CCB #260337, giving clients confidence that every project is handled with professionalism, accountability, and care. We understand Junction City’s permitting process, local soil conditions, rural property needs, and neighborhood character, allowing us to plan each project with clear communication, dependable craftsmanship, and construction solutions built to last.
Why Choose Us
- Licensed, bonded & insured - Oregon CCB #260337
- Fixed-bid pricing so you know your costs before we break ground
- In-house project management - one point of contact from permit to punch list
- Local crews who understand Junction City building codes, farmland acreage lots, and north-Lane permitting
Years in Business
Projects completed
On-time delivery
Our Services
General Contracting
As your general contractor, Kempf Construction LLC manages every moving part of your build, including design coordination, permitting with the City of Junction City, scheduling, licensed subcontractors, materials, inspections, and final delivery. Whether you are expanding a home, opening a storefront, or building from the ground up, we keep your project organized, fully code compliant, and on schedule.
Residential Construction
We build homes for the way Junction City lives. Our residential construction services cover new single-family homes, full structural framing, and ground-up builds on infill lots and farmland acreage throughout the area. From energy-efficient designs suited to the Willamette Valley climate to layouts that take advantage of Junction City's open countryside and growing subdivisions, we build durable, beautiful homes designed to last.
Commercial Construction
Junction City business owners and developers rely on us for tenant improvements, retail and office build outs, and complete commercial construction. We coordinate with architects, engineers, and city officials to deliver code compliant commercial spaces that include restaurants, professional offices, retail environments, and mixed use projects. Every build is managed to minimize disruption to your operations and maintain a clear, predictable timeline.
Remodeling
Whether you own a farmhouse on acreage outside town or a classic home near historic downtown Junction City, our remodeling services breathe new life into existing spaces. We handle whole-home renovations, room-by-room updates, and structural remodels; improving function, comfort, and resale value while respecting your home's character.
Home Additions
Need more space without moving? Our home addition services create the extra square footage you need most, including primary suite additions, second stories, expanded living rooms, sunrooms, and bump outs. We integrate new construction seamlessly with your existing structure so the addition looks and feels original to the home and maintains the same quality and durability as the rest of your property.
ADU Construction
Accessory dwelling units are one of the smartest ways to add value, rental income, or multigenerational living space in Junction City. As an experienced ADU builder, we handle detached and attached units, garage conversions, and shop or barn conversions that are fully permitted under Oregon and City of Junction City ADU rules. ADUs are especially practical on Junction City’s larger farm and rural residential lots, offering flexibility and long term value for homeowners.
Our Construction Process
Free Consultation
We meet with you to review your goals, site conditions, and budget. This first step ensures we understand your vision and can provide accurate guidance from the start.
Fixed‑Bid Estimate
You receive a clear, written scope of work and a fixed price. No surprises, just transparent numbers and a defined plan.
Design & Permitting
Our team finalizes plans and secures all required City of Albany and Linn County permits. We handle the paperwork so your project moves forward smoothly and on schedule.
Construction
Skilled crews build according to plan, maintaining a clean job site and providing regular progress updates. We coordinate trades and inspections to keep everything efficient and organized.
Inspections
Every phase passes required code inspections to ensure safety, compliance, and long‑term durability.
Final Walkthrough
We don’t finish until you’re satisfied. Together, we review every detail to confirm the work meets your expectations and our quality standards.
Local Spotlight: Building & Expanding Homes Across Junction City
Frequently Answered Questions
How much does it cost to build a custom home in Junction City, Oregon?
Building a custom home in Junction City typically costs between $250 and $400+ per square foot, depending on design, finishes, site conditions, and lot prep. A fixed-bid estimate from Kempf Construction gives you an exact price before construction begins.
Do I need a permit to build an ADU in Junction City?
Yes. ADUs in Junction City require permits through the City of Junction City and must comply with Oregon’s statewide ADU rules covering size, setbacks, and parking. As a licensed contractor, we handle the entire permitting process for you.
Can I build a home on farmland acreage outside Junction City?
Yes. We build ground-up custom homes on farmland and rural-residential acreage throughout the Junction City area, including lots along Prairie Road and toward Alvadore and Cheshire. We evaluate your site, handle Lane County and city permitting, and manage construction start to finish.
What's the difference between a general contractor and a home builder?
A general contractor manages and coordinates all aspects of a construction project — permits, subcontractors, scheduling, and inspections — for remodels, additions, and new builds alike, while “home builder” usually refers specifically to new-home construction. Kempf Construction does both.
Do you build shops, barns, or ADUs on larger Junction City lots?
Absolutely. Junction City’s larger farm and rural lots are ideal for detached ADUs, shops, and barn or garage conversions. We handle design, permitting, and construction for all of them.
